<!-- ＜（＾－＾）＞ -->
<!-- 2023年1月16日22点03分，TalentO_o -->
<!-- 监听路由发生变化：watch: { $route(newValue, oldValue) {...} } -->
<!-- 添加addCart事件，注意async函数以及await的使用 -->
<!-- 注意从vuex中取值的方式 -->
<template>
  <div>
    <TypeNav/>
    <div class="main">
      <div class="py-container">
        <!--面包屑-->
        <div class="bread">
          <ul class="fl sui-breadcrumb">
            <li>
              <a href="#">全部结果</a>
            </li>
          </ul>
          <ul class="fl sui-tag">
            <!-- 分类的面包屑 -->
            <li class="with-x" v-if="searchParams.categoryName">
              {{ searchParams.categoryName }}<i @click="removeCategoryName">×</i>
            </li>
            <!-- 关键字的面包屑 -->
            <li class="with-x" v-if="searchParams.keyword">
              {{ searchParams.keyword }}<i @click="removeKeyword">×</i>
            </li>
            <!-- 品牌的面包屑 -->
            <li class="with-x" v-if="searchParams.trademark">
              {{ searchParams.trademark.split(':')[1] }}<i @click="removeTrademark">×</i>
            </li>
            <!-- 属性的面包屑 -->
            <li class="with-x" v-for="(attrValue, index) in searchParams.props" :key="index">
              {{ attrValue.split(':')[1] }}<i @click="removeAttr(index)">×</i>
            </li>
          </ul>
        </div>

        <!--selector-->
        <SearchSelector @trademarkInfo="trademarkInfo" @attrInfo="attrInfo"/>

        <!--details-->
        <div class="details clearfix">
          <div class="sui-navbar">
            <div class="navbar-inner filter">
              <!-- 排序 -->
              <ul class="sui-nav">
                <li :class="{ active: isComprehensive }" @click="changeOrder(1)">
                  <a>综合
                    <span v-show="isComprehensive" class="iconfont"
                          :class="{ 'icon-shangfan': isAsc, 'icon-xiafan': isDesc }">
                    </span>
                  </a>
                </li>
                <li :class="{ active: isPrice }" @click="changeOrder(2)">
                  <a>价格
                    <span v-show="isPrice" class="iconfont"
                          :class="{ 'icon-shangfan': isAsc, 'icon-xiafan': isDesc }">
                    </span>
                  </a>
                </li>
              </ul>
            </div>
          </div>
          <!-- 销售产品列表 -->
          <div class="goods-list">
            <ul class="yui3-g">
              <li class="yui3-u-1-5" v-for="good in goodsList" :key="good.id">
                <div class="list-wrap">
                  <div class="p-img">
                    <router-link :to="`/detail/${good.id}`">
                      <!--v-lazy:只去加载可视区域图片，能减少很多不必要的请求-->
                      <img v-lazy="good.defaultImg"/>
                    </router-link>
                  </div>
                  <div class="price">
                    <strong>
                      <em>¥</em>
                      <i>{{ good.price }}.00</i>
                    </strong>
                  </div>
                  <div class="attr">
                    <a target="_blank" href="item.html" :title="good.title">
                      {{ good.title }}
                    </a>
                  </div>
                  <div class="commit">
                    <i class="command">已有<span>2000</span>人评价</i>
                  </div>
                  <div class="operate">
                    <button @click="addCart(good.id)" class="sui-btn btn-bordered btn-danger">
                      加入购物车
                    </button>
                    <button href="javascript:void(0);" class="sui-btn btn-bordered">收藏</button>
                  </div>
                </div>
              </li>
            </ul>
          </div>
          <!-- 分页器 -->
          <!-- 全局组件 -->
          <!-- 分页父子通信 -->
          <Pagination :pageNo="searchParams.pageNo"
                      :pageSize="searchParams.pageSize"
                      :total="total"
                      :continues="5"
                      @getPageNo="getPageNo">
          </Pagination>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import {mapGetters, mapState} from 'vuex'
import SearchSelector from './SearchSelector/SearchSelector'
import Detail from '@/pages/Detail'

export default {
  name: 'Search',
  components: {
    SearchSelector
  },
  data() {
    return {
      //带给服务器的参数
      searchParams: {
        //1级分类id
        category1Id: '',
        //2级分类id
        category2Id: '',
        //3级分类id
        category3Id: '',
        //分类名
        categoryName: '',
        //关键字
        keyword: '',
        //排序
        order: '1:desc',
        //当前页
        pageNo: 1,
        //每页展示数据量
        pageSize: 10,
        //商品属性
        props: [],
        //品牌
        trademark: ''
      }
    }
  },
  // beforeMount阶段无法操作DOM元素，不常用
  // mounted阶段可以操作DOM元素，常用
  beforeMount() {
    // Object.assign(目标对象, 源对象, 源对象,...) 把源对象的属性添加到目标对象中
    Object.assign(this.searchParams, this.$route.query, this.$route.params)
  },
  mounted() {
    this.getData();
  },
  methods: {
    getData() {
      /**
       * this.$store几个常用属性和函数：
       *  this.$store.dispatch()
       *  this.$store.commit()
       *  this.$store.state
       *  this.$store.getters
       */
      this.$store.dispatch('getSearchList', this.searchParams)
    },
    //删除分类的名字
    removeCategoryName() {
      this.searchParams.categoryName = undefined
      this.searchParams.category1Id = undefined
      this.searchParams.category2Id = undefined
      this.searchParams.category3Id = undefined
      this.getData()
      //地址栏更改
      if (this.$route.params) {
        this.$router.push({name: 'search', params: this.$route.params})
      }
    },
    //删除关键字
    removeKeyword() {
      this.searchParams.keyword = undefined
      this.getData()
      this.$bus.$emit('clear')
      if (this.$route.query) {
        // 清除keyword后，需要重新跳转路由
        this.$router.push({name: 'search', query: this.$route.query})
      }
    },
    // 自定义事件回调
    // 接受来自子组件SearchSelector的数据
    trademarkInfo(trademark) {
      this.searchParams.trademark = `${trademark.tmId}:${trademark.tmName}`
      this.getData()
    },
    //删除品牌
    removeTrademark() {
      this.searchParams.trademark = undefined
      this.getData()
    },
    //收集商品属性回调函数
    // 接受来自子组件SearchSelector的数据
    attrInfo(attr, attrValue) {
      let props = `${attr.attrId}:${attrValue}:${attr.attrName}`
      //数组去重
      if (this.searchParams.props.indexOf(props) === -1) {
        this.searchParams.props.push(props)
      }
      this.getData()
    },
    //删除商品属性
    removeAttr(index) {
      this.searchParams.props.splice(index, 1)
      this.getData()
    },
    //排序的操作
    changeOrder(flag) {
      let originFlag = this.searchParams.order.split(':')[0]
      let originSort = this.searchParams.order.split(':')[1]
      let newOrder = ''
      if (flag == originFlag) {
        // 综合
        newOrder = `${originFlag}:${originSort == 'desc' ? 'asc' : 'desc'}`
      } else {
        // 价格
        newOrder = `${flag}:${'desc'}`
      }
      this.searchParams.order = newOrder
      this.getData()
    },
    //获取当前第几页
    getPageNo(pageNo) {
      this.searchParams.pageNo = pageNo
      this.getData()
    },

    /**
     * 加入购物车
     * @returns {Promise<void>}
     */
    async addCart(goodId) {
      this.$store.dispatch('getGoodInfo', goodId)
      try {
        //1、发请求
        await this.$store.dispatch('reqAddToCart', {
          skuId: goodId,
          skuNum: 1
        })
        //2、成功---路由跳转
        // 把选择的商品信息存储到sessionStorage里，然后在AddCartSuccess中获取
        await sessionStorage.setItem('SKUINFO', JSON.stringify(this.skuInfo))
        this.$router.push({name: 'addcartsuccess', query: {skuNum: 1}})
      } catch (error) {
        //3、失败---给用户提示
        alert(error.message)
      }
    }
  },
  computed: {
    ...mapGetters(['goodsList', 'trademarkList', 'attrsList', 'skuInfo']),
    ...mapState({
      total: (state) => state.search.searchList.total
    }),
    //是否为综合排序
    isComprehensive() {
      return this.searchParams.order.includes('1')
    },
    //是否为价格排序
    isPrice() {
      return this.searchParams.order.includes('2')
    },
    //是否为升序
    isAsc() {
      return this.searchParams.order.includes('asc')
    },
    //是否为降序
    isDesc() {
      return this.searchParams.order.includes('desc')
    }
  },
  //数据监听：监听组件实例身上的属性的属性值变化
  watch: {
    //监听路由信息是否发生变化，如果发生变化，则发送请求
    $route(newValue, oldValue) {
      Object.assign(this.searchParams, this.$route.query, this.$route.params)
      this.getData()
      //每次请求结束后，需要清空分类id
      this.searchParams.category1Id = undefined
      this.searchParams.category2Id = undefined
      this.searchParams.category3Id = undefined
    }
  }
}
</script>

<style lang="less" scoped>
.main {
  margin: 10px 0;

  .py-container {
    width: 1200px;
    margin: 0 auto;

    .bread {
      margin-bottom: 5px;
      overflow: hidden;

      .sui-breadcrumb {
        padding: 3px 15px;
        margin: 0;
        font-weight: 400;
        border-radius: 3px;
        float: left;

        li {
          display: inline-block;
          line-height: 18px;

          a {
            color: #666;
            text-decoration: none;

            &:hover {
              color: #4cb9fc;
            }
          }
        }
      }

      .sui-tag {
        margin-top: -5px;
        list-style: none;
        font-size: 0;
        line-height: 0;
        padding: 5px 0 0;
        margin-bottom: 18px;
        float: left;

        .with-x {
          font-size: 12px;
          margin: 0 5px 5px 0;
          display: inline-block;
          overflow: hidden;
          color: #000;
          background: #f7f7f7;
          padding: 0 7px;
          height: 20px;
          line-height: 20px;
          border: 1px solid #dedede;
          white-space: nowrap;
          transition: color 400ms;
          cursor: pointer;

          i {
            margin-left: 10px;
            cursor: pointer;
            font: 400 14px tahoma;
            display: inline-block;
            height: 100%;
            vertical-align: middle;
          }

          &:hover {
            color: #28a3ef;
          }
        }
      }
    }

    .details {
      margin-bottom: 5px;

      .sui-navbar {
        overflow: visible;
        margin-bottom: 0;

        .filter {
          min-height: 40px;
          padding-right: 20px;
          background: #fbfbfb;
          border: 1px solid #e2e2e2;
          padding-left: 0;
          border-radius: 0;
          box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);

          .sui-nav {
            position: relative;
            left: 0;
            display: block;
            float: left;
            margin: 0 10px 0 0;

            li {
              float: left;
              line-height: 18px;

              a {
                display: block;
                cursor: pointer;
                padding: 11px 15px;
                color: #777;
                text-decoration: none;
              }

              &.active {
                a {
                  background: #e1251b;
                  color: #fff;
                }
              }
            }
          }
        }
      }

      .goods-list {
        margin: 20px 0;

        ul {
          display: flex;
          flex-wrap: wrap;

          li {
            height: 100%;
            width: 20%;
            margin-top: 10px;
            line-height: 28px;

            .list-wrap {
              .p-img {
                padding-left: 15px;
                width: 215px;
                height: 255px;

                a {
                  color: #666;

                  img {
                    max-width: 100%;
                    height: auto;
                    vertical-align: middle;
                  }
                }
              }

              .price {
                padding-left: 15px;
                font-size: 18px;
                color: #c81623;

                strong {
                  font-weight: 700;

                  i {
                    // margin-left: -5px;
                  }
                }
              }

              .attr {
                padding-left: 15px;
                width: 85%;
                overflow: hidden;
                margin-bottom: 8px;
                min-height: 38px;
                cursor: pointer;
                line-height: 1.8;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                -webkit-line-clamp: 2;

                a {
                  color: #333;
                  text-decoration: none;
                }
              }

              .commit {
                padding-left: 15px;
                height: 22px;
                font-size: 13px;
                color: #a7a7a7;

                span {
                  font-weight: 700;
                  color: #646fb0;
                }
              }

              .operate {
                padding: 12px 15px;

                .sui-btn {
                  display: inline-block;
                  padding: 2px 14px;
                  box-sizing: border-box;
                  margin-bottom: 0;
                  font-size: 12px;
                  line-height: 18px;
                  text-align: center;
                  vertical-align: middle;
                  cursor: pointer;
                  border-radius: 0;
                  background-color: transparent;
                  margin-right: 15px;
                }

                .btn-bordered {
                  min-width: 85px;
                  background-color: transparent;
                  border: 1px solid #8c8c8c;
                  color: #8c8c8c;

                  &:hover {
                    border: 1px solid #666;
                    color: #fff !important;
                    background-color: #666;
                    text-decoration: none;
                  }
                }

                .btn-danger {
                  border: 1px solid #e1251b;
                  color: #e1251b;

                  &:hover {
                    border: 1px solid #e1251b;
                    background-color: #e1251b;
                    color: white !important;
                    text-decoration: none;
                  }
                }
              }
            }
          }
        }
      }

      .page {
        width: 733px;
        height: 66px;
        overflow: hidden;
        float: right;

        .sui-pagination {
          margin: 18px 0;

          ul {
            margin-left: 0;
            margin-bottom: 0;
            vertical-align: middle;
            width: 490px;
            float: left;

            li {
              line-height: 18px;
              display: inline-block;

              a {
                position: relative;
                float: left;
                line-height: 18px;
                text-decoration: none;
                background-color: #fff;
                border: 1px solid #e0e9ee;
                margin-left: -1px;
                font-size: 14px;
                padding: 9px 18px;
                color: #333;
              }

              &.active {
                a {
                  background-color: #fff;
                  color: #e1251b;
                  border-color: #fff;
                  cursor: default;
                }
              }

              &.prev {
                a {
                  background-color: #fafafa;
                }
              }

              &.disabled {
                a {
                  color: #999;
                  cursor: default;
                }
              }

              &.dotted {
                span {
                  margin-left: -1px;
                  position: relative;
                  float: left;
                  line-height: 18px;
                  text-decoration: none;
                  background-color: #fff;
                  font-size: 14px;
                  border: 0;
                  padding: 9px 18px;
                  color: #333;
                }
              }

              &.next {
                a {
                  background-color: #fafafa;
                }
              }
            }
          }

          div {
            color: #333;
            font-size: 14px;
            float: right;
            width: 241px;
          }
        }
      }
    }
  }
}
</style>
